Toshiba TLCS-90 Series Data Book page 20

TOSHIBA
TMP 8048A/TMP 80 35A, TMP 8049A/TMP 8039A
JTF
Instruction
S
Conditional Jump Logic
Timer
Flag F-F
>--+-_01 R
Re
se
t ---:L~
Timer Overflow
--------~~s Q~----_01
Timer Interrupt
Execution------~~
Reset
INT
pin
ALE
Last cycle
of Instruct
EN I
Instruction
Timer
Overflow
R F-F
N TCl:T 1 S ~
Q
Instruction ~
... ...
~~~
R~.s~
Reset----~~----------------~
Instruction
DIS TCNTl
Instruction
RETR
tion
r---~:;--...,External inter-
CLK
rupt Recognized
Q
CLR
Execution of Inter-
rupt Call Instruction
Fig. 3 Concept of Interrupt Control Circuit
(5) Interrupt Control Circuit
• There are two distinct types of Interrupts in the TMP8048A.
(1) External Interrupt from the INT terminal
(2) Timer Interrupt caused by timer overflow
MCU48-l0